package com.heima.article.service.impl;

import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.heima.article.mapper.ApArticleMapper;
import com.heima.article.service.ApArticleService;
import com.heima.common.constants.ArticleConstants;
import com.heima.model.article.dtos.ArticleHomeDto;
import com.heima.model.article.pojos.ApArticle;
import com.heima.model.common.dtos.ResponseResult;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import javax.annotation.Resource;
import java.util.Date;
import java.util.List;

@Transactional
@Slf4j
@Service(value = "apArticleService")
public class ApArticleServiceImpl extends ServiceImpl<ApArticleMapper, ApArticle> implements ApArticleService{
	// 单页最大加载的数字
	private final static short MAX_PAGE_SIZE = 50;
	
	@Resource
	private ApArticleMapper apArticleMapper;
	
	@Override
	public ResponseResult load(Short loadtype, ArticleHomeDto dto){
		// 1.校验参数
		Integer size = dto.getSize();
		if(size == null || size == 0){
			size = 10;
		}
		size = Math.min(size, MAX_PAGE_SIZE);
		dto.setSize(size);
		
		// 类型参数检验
		if(!loadtype.equals(ArticleConstants.LOADTYPE_LOAD_MORE) && !loadtype.equals(ArticleConstants.LOADTYPE_LOAD_NEW)){
			loadtype = ArticleConstants.LOADTYPE_LOAD_MORE;
		}
		// 文章频道校验
		if(StringUtils.isEmpty(dto.getTag())){
			dto.setTag(ArticleConstants.DEFAULT_TAG);
		}
		
		// 时间校验
		if(dto.getMaxBehotTime() == null){
			dto.setMaxBehotTime(new Date());
		}
		if(dto.getMinBehotTime() == null){
			dto.setMinBehotTime(new Date());
		}
		// 2.查询数据
		List<ApArticle> apArticles = apArticleMapper.loadArticleList(loadtype, dto);
		
		// 3.结果封装
		return ResponseResult.okResult(apArticles);
	}
}
